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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/afs/cell.h | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'fs/afs/cell.h')
-rw-r--r-- | fs/afs/cell.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/fs/afs/cell.h b/fs/afs/cell.h new file mode 100644 index 000000000000..48349108fb00 --- /dev/null +++ b/fs/afs/cell.h @@ -0,0 +1,78 @@ +/* cell.h: AFS cell record + * + * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#ifndef _LINUX_AFS_CELL_H +#define _LINUX_AFS_CELL_H + +#include "types.h" +#include "cache.h" + +#define AFS_CELL_MAX_ADDRS 15 + +extern volatile int afs_cells_being_purged; /* T when cells are being purged by rmmod */ + +/*****************************************************************************/ +/* + * entry in the cached cell catalogue + */ +struct afs_cache_cell +{ + char name[64]; /* cell name (padded with NULs) */ + struct in_addr vl_servers[15]; /* cached cell VL servers */ +}; + +/*****************************************************************************/ +/* + * AFS cell record + */ +struct afs_cell +{ + atomic_t usage; + struct list_head link; /* main cell list link */ + struct list_head proc_link; /* /proc cell list link */ + struct proc_dir_entry *proc_dir; /* /proc dir for this cell */ +#ifdef AFS_CACHING_SUPPORT + struct cachefs_cookie *cache; /* caching cookie */ +#endif + + /* server record management */ + rwlock_t sv_lock; /* active server list lock */ + struct list_head sv_list; /* active server list */ + struct list_head sv_graveyard; /* inactive server list */ + spinlock_t sv_gylock; /* inactive server list lock */ + + /* volume location record management */ + struct rw_semaphore vl_sem; /* volume management serialisation semaphore */ + struct list_head vl_list; /* cell's active VL record list */ + struct list_head vl_graveyard; /* cell's inactive VL record list */ + spinlock_t vl_gylock; /* graveyard lock */ + unsigned short vl_naddrs; /* number of VL servers in addr list */ + unsigned short vl_curr_svix; /* current server index */ + struct in_addr vl_addrs[AFS_CELL_MAX_ADDRS]; /* cell VL server addresses */ + + char name[0]; /* cell name - must go last */ +}; + +extern int afs_cell_init(char *rootcell); + +extern int afs_cell_create(const char *name, char *vllist, struct afs_cell **_cell); + +extern int afs_cell_lookup(const char *name, unsigned nmsize, struct afs_cell **_cell); + +#define afs_get_cell(C) do { atomic_inc(&(C)->usage); } while(0) + +extern struct afs_cell *afs_get_cell_maybe(struct afs_cell **_cell); + +extern void afs_put_cell(struct afs_cell *cell); + +extern void afs_cell_purge(void); + +#endif /* _LINUX_AFS_CELL_H */ |